General: Chemical Symbol: Ag Atomic Number: 47 Category (as an element): Transition Metal Group/ Period/ Block (in the Periodic Table): 11/ 5/ d Atomic Weight: 107.8682 g.mol-1 Electron Configuration: [Kr] 4d10 5s1 Physical: Density (near room temperature): 10.49 g.cm-3 Liquid Density (at melting point): 9.320 g. Trading in ETFs means doing away with the inconveniences associated with the handling of physical silver bars. Entering in a Contract For Difference (CFD): Some of the noted financial services firms, especially those in the United Kingdom, provide Contract for Difference (CFD). In this silver investment vehicle, two parties (a "buyer" and a "seller") enter into a contract, in which the seller agrees to pay the buyer the difference between the current value of silver and its value at contract time. The list is presented in order of increasing atomic number. 1. Ruthenium - VIIIb/5; Ru -> Ru2+ + 2 e-; 0.455 V 2. Rhodium - VIIIb/5; Rh -> Rh2+ + 2 e-; 0.600 V 3. Palladium - VIIIb/5; Pd -> Pd2+ + 2 e-; 0.987 V 4. Silver - Ib/5; Ag -> Ag+ + e-; 0.7996 V 5. Osmium - VIIIb/6; Os + 4 H2O -> OsO4 + 8 H+ + 8 e-; 0.838 V 6. Gold Specie Standard: In this gold standard, the unit of currency is linked to the gold coins that are in circulation. More specifically, the monetary unit is associated with the unit of value of a specific gold coin in circulation along with that of any secondary coinage (coins made of metal that is valued less than gold). General: Chemical Symbol: Ir Atomic Number: 77 Category (as an element): Transition Metal Group/ Period/ Block (in the Periodic Table): 9/ 6/ d Atomic Weight: 192.217 g.mol-1 Electron Configuration: [Xe] 4f14 5d7 6s2 Physical: Density (near room temperature): 22.56 g.cm-3 Liquid Density (at melting point): 19 g. ) coin - With a face value of USD10, 3.112 grams (g) in weight, 0.95 millimeters (mm) thick, and 16.5 mm in diameter. 2. 1/4 oz. coin - With a face value of USD25, 7.78 g in weight, 1.32 mm thick, and 22 mm in diameter. 3. 1/2 oz. coin - With a face value of USD50, 15.56 g in weight, 1.75 mm thick, and 27 mm in diameter.